The warming trend that will hit Southern California on Tuesday is bringing with it some adverse air quality.
The South Coast Air Quality Management District said in a news release that experts predict “a multi-day extreme ozone (smog) event” to affect much of Southern California through Thursday.

The Air Quality Index is expected to reach levels of being unhealthy for sensitive groups in the following areas:
- Inland areas, including Lake Elsinore, Corona, Hemet and Pasadea
- The Coachella Valley
The Air Quality Index is expected to reach levels of being unhealthy for everyone in the following areas:
- The Santa Clarita Valley
- The San Gabriel Valley
- The San Bernardino Valley
- The San Bernardino Mountains
Air quality typically worsens after sunrise, peaks in mid-afternoon and then decreases, making early morning hours and overnight the times with the least smog.
During those daytime hours, the AQMD suggests the following:
- Limit outdoor activities during periods of lesser air quality
- Limit gasoline-powered lawn and garden equipment until evening hours
- Conserve electricity and set air conditioner to a higher temperature
- Delay trips to the gas station and the use of household chemicals until the evening
Another update from the AQMD is expected if smog levels are expected to remain high past Thursday.
For more information, visit the AQMD’s website.